Window-frame.



Patented Oct. 28, I902.

No. 712,403. F. G. OLDENBUBG.

WINDOW FRAME.

(AppXication filed Apr. 80, 1902.) mammal.)

ing-strip of different form.

UNITED STATES PATENT OFFICE.

FRANZ GEORG OLDENBURG, OF ALTONA, NEAR HAMBURG, GERMANY.

WlNDOW-FRAM E.

SPECIFICATION forming part of Letters Patent No. 712,403, dated. October 28, 1902.

Application filed April 30, 1902. Serial No. 105601. (No model.)

To all whom it may concern:

Be it known that I, FRANZ GEORG OLDEN- BURG, manufacturer, of 12 Eimsbiittelerstrasse, Altona, near Hamburg, in the Empire of Germany, have invented new and usefulImprovementsin and Relating toWindow- Frames, (for which applications have been made in Germany for machine patent, filed March 1,1902,and for petty patent-,filed March 1, 1902, and in Great Britain for machine patent, filed March 26, 1902,) of which the following is a specification.

This invention relates to improvements in window-frames constructed of iron, and more particularly to devices for obtaining tight closing of the window, so as to prevent drafts. The invention is illustrated in the accompanying drawings, in which- Figure 1 is a cross-section through an iron window-frame and casement. Fig. 2 is a perspective iew of the elastic packingstrip shown in Fig. 1. Fig. 3 illustrates a pack- Fig. 4 shows this latter packing-strip in use. Fig. 5 shows a spring packing-strip in use. Fig. 6 is a perspective view of the sprin, employed. Fig. 7 is a sideelevation of the spring. Fig. 8 shows a spring stamped from sheet metal, and Fig. 9 is a side elevation of the same.

The window-frame is composed of lengths Ct and b of rolled angle-iron, which hold the window-paneA. The casement of the window, which is fixed into the opening in the wall, consists of an angle-iron frame c,'thewindow-frame and casement being connected in the usual manner by means of hinges d, placed in suitable positions.

For the purpose of obtaining a tight fit an elastic packing-strip e is fixed between the window-frame and the casement c and to one of them so as to be compressed between it and the other perpendicularly when the frame is swung shut, as shown in the drawings. The attachmentis efiected by means of clamping-strips f, which may be forced down upon lateralbase-webs of the strip by screws entering the member to which they are attached. This packing-strip may be of felt, and a convenient form for the same is that represented in Fig. 2. The said packing-strip may also,

however, be constituted of a flat piece of felt, which is bent together in the fixing in the direction of its length, as shown in Fig. 3.

rial, attached to a raised ledge 71 upon a web of the angle-iron casement and supported by springs of special form. These springs (of which a form 7t, consisting of double-armed or U-bent wire, is shown in Figs. 6 and 7,

and another double-armed form 70, stamped in U shape from sheet metal, in Figs. 8 and 9) extend the entire length of the packingstrip and preferably in one continuous piece, as shown. The ledge i being elevated forms a pocket for the reception and proper retention of the lower arms of these springs between the inner edge of said ledge and the adjacent rentraut angle of the easement.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination of a window-frame, a casement to which said frame is hinged, a yielding strip 71. secured to one of said members, to be pressed against by the other, and a metallic spring seated upon the member to which said strip is secured and acting against the strip in opposition to the other member.

2. The combination of an angle-iron window-frame, an angle-iron casement to which said frame is hinged, a ledge 1'- secured to and rising above a web of the casement to form a pocket between its inner edge and the adjacent rentrant angle of the easement, a yielding strip h secured to the top of said ledge to be pressed against the window-frame when the latter closes, and a continuousdouble- 

